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Question

Ozone depletion is caused by only nitric oxide - True or False?
  1. True
  2. False


Solution

The correct option is B False
Nitric oxide causes ozone depletion, as shown below:
NO(g)+O3(g)NO2(g)+O2(g)

Effect of CFC’s (Chloro Fluoro Carbons) on ozone layer
CF2Cl2hvCl+CF2ClCl+O3(g)ClO+O2(g)

Thus nitric oxide is major cause for ozone depletion although it is not the only cause.

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